Granularity reconstruction and characterization of silicon carbide micronized powders

Abstract

Water glass and silica-alumina sol were used as adhesives, uniformly mixed with silicon carbide powder. The effects of binder, binder concentration, sintering temperature, and sintering process on the granularity reconstruction of SiC powders were studied in detail. The results show that when water glass is used as the binding agent, vacuum sintering can effectively inhibit the oxidation of silicon carbide, and suitable granulation and sintering samples are obtained at a concentration of 5%. When silica-aluminum sol is used as the binding agent, it is discovered that the increase in engagement can effectively increase the particle size, and the best effect is achieved at a concentration of 10%. Both systems of binding agents can successfully bind silicon carbide micronized powder, enlarge silicon carbide particles, and accomplish the goal of Granularity reconstruction.